RU102005U1 - BAYONET LOCK TO AUGER PRESS FOR BALLIST POWDER - Google Patents

Abstract

 Bayonet lock for ballistic gunpowder screw press, comprising a rotary ring with teeth, a die and a press tool with reciprocal teeth on the flange, characterized in that a hole for a movable pin joint with a screw press housing flange is made in the die flange and the press tool , the housing of the die and the press tool has wedge elements mounted to interact with spring-loaded pushers mounted on the rotary ring, while the size along the arc of the tooth of the flange of the die and the press tool is flax is less than the length of the cavity between the teeth in the ring by the amount necessary for the axial displacement of the die and the press tool when turning the bayonet lock ring in the final phase of opening the lock.

Description

The utility model relates to the field of quick-disconnect remotely controlled connecting devices and can be used in the manufacture of ballistic powders for connecting screw presses to subsequent devices, for example, dies or pressing tools.

Special devices for connecting elements of equipment are known to be used in the powder industry.

So in the book of L. A. Smirnov “Equipment for the production of ballistic gunpowder using screw technology and charges from them” MGAHM, Moscow, 1997, pp. 122-123 describes a special wedge closure designed to fix the pressing tool to the auger press housing . The shutter has a drive and its opening is carried out remotely, however, the subsequent removal of the press tool from the so-called "headstock" - the pressed product between the screw and the press tool is done manually. This operation is fire and explosive, because in some cases, leads to an outbreak of powder mass. This is the disadvantage of such a shutter.

In the book of the authors A. A. Loshchinsky and A. R. Tolchinsky “Fundamentals of the design and calculation of chemical equipment”, Mashgiz, M., 1963, pp. 308-309, a description of bayonet caps with teeth, which are closed and opened by turning relatively stationary vessel flange. The flange of the vessel also has teeth, which during rotation of the lid enter into interaction with the teeth of the lid, fastening the lid to the flange, closing the vessel. The book also indicates that the rotation of the cover can be carried out by an appropriate mechanism. Famous bayonet locks have the same drawback as the previous wedge lock. Those. after the lock is opened, it is necessary to manually perform the dangerous operation of tearing the press tool from the pressed powder mass. However, the design features of the bayonet-type lock allow the introduction of additional elements to eliminate this drawback by using the rotation of one element of the lock relative to additional elements of another. The bayonet-type lock is adopted as a prototype.

The technical task of the proposed utility model is to increase the safety of processing ballistic powder mass by creating a bayonet lock that eliminates the dangerous manual operation of tearing the press tool from the pressed powder mass after opening the lock.

The technical result is achieved by the fact that the screw press in the production of ballistic gunpowder is connected to a die and a press tool with a remotely controlled bayonet lock. The bayonet lock is equipped with a rotary ring with teeth for bayonet connection, and the flanges of the die and press tool have counter teeth and are equipped with holes for a movable pin connection with the flange of the screw press housing. At the same time, the bayonet lock rotary ring is equipped with spring-loaded pushers. The cases of the die and the press tool are made with wedge elements installed with the possibility of interaction with spring-loaded pushers. The tooth size along the arc of the die and press tool flange is made smaller than the length of the cavity between the teeth in the rotary ring of the bayonet lock by the amount necessary for the axial displacement of the die and press tool by spring-loaded pushers by a specified distance when the bayonet lock ring is rotated in the final phase of its opening.

The essence of the proposed utility model is illustrated by figures 1 ... 6.

Figure 1 shows a view of the bayonet lock on the die side in the squeeze screw press and on the press tool side in the forming screw press (operating position).

Figure 2 shows a longitudinal section of a bayonet lock (working position).

Figure 3 shows the relative position of the spring-loaded pusher and the wedge element in the working position of the screw presses.

Figure 4 shows a view of the bayonet lock from the side of the die or press tool in the open position of the lock.

Figure 5 shows a longitudinal section of a bayonet lock in the open position.

Figure 6 shows the relative position of the spring-loaded plunger and the wedge element when the bayonet lock is open.

Where:

1 - flange of the housing of the screw press;

2 - a flange of a die (or a press tool) with teeth for a bayonet lock;

3 - pin;

4 - a rotary ring;

5 - a spring-loaded pusher;

6 - wedge element;

7 - a lock hydraulic cylinder;

8 - lever.

The proposed bayonet locks are applicable for connecting the case of the squeezing screw press with the die, as well as the case of the forming screw press with the press tool.The device of these locks is identical, therefore the description of the lock that connects the flange of the case of the squeezing screw press with the die is given below.

A bayonet lock connects the flange of the screw press housing 1 to the flange of the die 2. The flange of the die 2 has teeth for bayonet connection. The die is fixed from rotation relative to the longitudinal axis by a pin 3. The rotary element of the bayonet lock is a rotary ring 4, which has reciprocal teeth for: interacting with the teeth of the flange of the die 2. Two diametrically sprung spring pushers 5 are fixed on the rotary ring 4, and two are made on the die body wedge element 6. On the rotary ring 4 is mounted a lever 8, which is pivotally connected to the rod of the hydraulic cylinder 7. Figures 1, 2, 3 show the closed (working) position of the bayonet lock when the tooth of the rotary ring 4 are in contact with the teeth of the flange of the die 2, pressing the die to the flange of the housing of the screw press 1. The size of the tooth along the arc on the flange of the die 2 is made less than the length of the cavity between the teeth in the rotary ring 4 by an amount necessary for axial displacement of the die by spring-loaded pushers 5. Before work, the connection of the die with the flange of the screw press housing is performed in the following order. With the bayonet lock open and the pushers 5 retracted, the die flange 2 is inserted into the groove of the screw press housing 1 until it stops. In this case, the pin 3 should enter the hole of the flange 2 of the die. The hydraulic cylinder 7 rotates the ring 4, its teeth come into contact with the teeth of the flange of the die 2, the bayonet lock closes. The installation is ready to go.

After the technological cycle, before cleaning the screw press, the spring-loaded pushers 5 are pulled out and then the remote disassembly operation is performed. To do this, the hydraulic cylinder 7 is turned on, the rotation of the rotary ring 4 is made, its teeth are brought out of contact with the teeth of the flange of the die 2, and with a further rotation of the ring 4, the ends of the extended pushers 5 slide along the bevels of the wedge elements 6 and move the die from the flange of the screw housing the press 1 at a predetermined distance, tearing the die out of the pressed powder mass. The relative position of the elements of the bayonet lock, die and the housing of the screw press 1 in the open position is shown in figures 4, 5, 6.

Then, already in the local mode, the screw press is completely disassembled and cleaned of the remains of the powder mass.

Thus, the proposed device allows to increase the safety of the operation of disassembling and cleaning the squeezing and forming screw presses after the technological cycle due to the fact that the bayonet locks connecting the housing of the screw presses with the die and the press tool are made in such a way that when they are opened in the final phase turning the lock ring, the die and the press tool are separated from the powder mass pressed on the outlet of the screw presses.

The bayonet lock for the screw press was tested with positive results in the conditions of production of FSUE NIIPM.

Claims (1)

Bayonet lock for ballistic gunpowder screw press, comprising a rotary ring with teeth, a die and a press tool with counter teeth on the flange, characterized in that a hole for a movable pin joint with a screw press housing flange is made in the die flange and the press tool , the housing of the die and the press tool has wedge elements mounted to interact with spring-loaded pushers mounted on the rotary ring, while the size along the arc of the tooth of the flange of the die and the press tool is flax is less than the length of the cavity between the teeth in the ring by the amount necessary for the axial displacement of the die and the press tool when turning the bayonet lock ring in the final phase of opening the lock.